Center-selvage mechanism or attachment for looms.



PATENTED MAY 2, 1905.

H. LEDOUX. CENTER SBLVAGE MECHANISM 0R ATTACHMENT FOR LOOMS.

APPLIOATION FILED FEB. 3,1905.

OM/QM b w W U ITED STATES Patented May 2, 1905.

PATENT OFFICE.

HECTOR LEDOUX, OF WORCESTER, MASSACHUSETTS. ASSIGNOR TO CROMPTON & KNOWLES LOOlW 1V ORKS, A CORPORATION OF MASSACHUSETTS.

CENTER-SELVAGE MECHANISM OR ATTACHMENT FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 788,918, dated May 2, 1905.

Application filed February 3, 1905. Serial No. 243,924.

To all whom it may concern.-

Be it known that I, HECTOR LEDOUX, a citizen of the United States, residing at l/Vorcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Im provements in Center-Selvage Mechanism or Attachments for Looms, of which the following is a specification.

My invention relates to a center-selvage mechanism or attachment for a loom which is used in making center selvages where two or more widths of fabric are woven on the loom at the same time.

The object of my invention is to provide an improved center-selvage mechanism of simple construction; and my invention consists in certain novel features of construction of my improvements, as will be hereinafter fully described.

I have only shown in the drawings a detached portion of a lay with my improvements combined therewith sufiicient to enable those skilled in the art to understand the construction and operation thereof.

Referring to the drawings, Figure 1 is a front view of a detached portion of a lay with my improvements in center-selvage mechanism combined therewith looking in the direction of arrow (0, Fig. 2. Fig. 2 is a side View of the parts shown in Fig. 1, taken on line 2 2 looking in the direction of arrow 5, same figure. Fig. 3 corresponds to Fig. 2, but shows the lay in its rear position with the shed open. Fig. 4 is a rear view of the center-selvage mechanism looking in the direction of arrow 0, Fig. 2. Fig. oshowsadetached piece of fabric having center selvages formed by my center-selvage mechanism.

In the accompanying drawings, 1 is a portion of the lay-beam, 2 is the reed, and 3 is the hand-rail.

4and 5 are two vertically-moving harnesses, which form the shed in the usual manner.

6 and 7 are two sets of warp-threads, which, with the filling-threads 8, Fig. 5, form the woven fabric shown in said figure.

9 is a detached portion of the loom-arch.

I will now describe my improvements in center-selvage mechanism.

Upon the upper side of the hand-rail 3 of the lay at a point where it is desired to form the center selvages is secured in this instance a stand 10, having the two uprights 10, the inner edges 10 of which form tracks or guideways for the vertically-moving block 11. The block 11 has on its rear surface lugs 11 to receive a pin 12, on which is pivotally mounted the hub 13' on the lower end of the connector 13. The upper end of the connector 13 has a hub 13 thereon, which is pivotally mounted on a pin 14, adjustably secured by a 'nut 14 in an elongated opening 15 in the arm 15, bolted in this instance to the front side of the loomarch 9. As the lay moves backward from the position shown in Fig. 2 to the position shown in Fig. 3 the block 11, through connector 13, is moved downwardly on the guideways 10.

The sliding block 11 has on its front upper part a bearing 11 for a rotary shaft 16. Fast on one end of said shaft 16 is the hub 17 ofa ratchet-wheel 17, the teeth of which are adapted to be engaged by the hook end of a pawl 18, the hub 18 of which is pivotally mounted on a stud 19, secured on the outer edge of one of the uprights 10 on the stand 10. A down wardly-extending extension 18 on the pawl 18 is engaged by one end of a coiled expansion-spring 20. The other end of said spring 20 is held in a hub 10" on one of the uprights 10. (See Fig. 1.) The spring 20 acts to move inwardly the upper end of the pawl 18 to engage the ratchet-wheel 17. A pin 10, fast on the upper part of one of the uprights 10 on the stand 10, extends in the path of and is adapted to engage and limit the inward movement of the pawl 18. (See Figs. 1 and 2.)

On the opposite end of the shaft 16 from the ratchet-wheel 17 is fast a cam 21, which has recesses 21 on its periphery, adapted to receive a roll 22, mounted on a pin 23 on the upper end of an arm 24. A spring 22, at

tached to the arm 24 and to an upright 10, acts to hold the roll 22 in yielding engagement with recesses 21, Fig. 4. The lower end of the arm 24 is attached to a hub 24:, loosely mounted on a pin 25, secured to the lower part of the sliding block 11 and extending out from the rear side thereof. The hub 24 has a downwardly-extending boss or holder 24", which is adapted to receive and hold the upper ends of the two needles 26. The lower end of each needle 26 has an eye 26 therein, through which passes a selvage-thread 27 from a spool 28, mounted to rotate in a stand 29, secured in this instance to the under side of the loom-arch 9. The selvage-threads 27 pass from the needles 26 between guide-bars 26" at the rear of the lay back of the reed 2. The spool 28 for the selvage-threads 27 is provided with a suitable tension mechanism (not shown) of any ordinary construction to apply a tension to the thread as it passes from the spool.

The operation of my improvements in center-selvage mechanism from the abovedescription in connection with the drawings will be readily understood by those skilled in the art. When the lay is in its rear position, (see Fig. 3,) the sliding block 11 will be in its lowest position and the needles 26 also in their lowest position to carry the selvage-threads 27 below the lower plane of the warp-threads. The shuttle is now thrown through the shed and on the forward movement of the lay to its extreme forward position, Fig. 2, the sliding block 11, through connector 13, is raised,

and with it the needles 26. As the sliding block 11 is raised the pawl 18 will engage the ratchet-wheel 17 and give a partial rotation to the same, and with it the cam 21. The rotation of the cam 21, through roll 22, moves the arm 24 and rocks its hub 24?, and with it the needles 26, to move them above the upper plane of the warp-threads to one side of a vertical line, as shown in Figs. 1 and 4:.

On the backward movement of the lay the sliding block 11 is moved downwardly, and with it the needles 26, to carry the selvagethreads 27 on the other side of two or more of the warp-threads. The shuttle will be then thrown through the shed with the filling to bind the selvage-threads. On the forward movement of the lay another partial rotation will be communicated through the pawl 18 to the ratchet-wheel 17 and the cam 21 and the needles 26 will be moved in the opposite direction to the reverse position to that shown in Figs. 1 and 1, and on the backward movement of the lay the needles 26 will be carried down on the opposite side of the warp-threads, and this operation will be repeated as the loom continues to operate and the fabric will be woven with the center selvages, as shown in Fig. 5, as will be well understood by those skilled in the art.

It will be understood that the details of construction of my improvements may be varied, if desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a center-selvage attachment for looms, the combination with the lay, and guideways thereon, of a vertically-moving block supported on said guideways, means for communicating a reciprocating movement to said block on the movement of the lay, needles for the selvage-thread carried on said block, and means for communicating a rocking motion to said needles, substantially as shown and described.

2. In a center-selvage attachment for looms, the combination with guideways on the lay, a block having a vertical reciprocating movement on said guideways, a connection from said block to a stationary part, to move said block on the movement of the lay, of a needle or needles for the selvage-thread, having a rocking motion, and supported on and moving with said block, and means for rocking said needles, said means operated on the movement of said block, substantially as shown and described.

3. In acenter-selvage attachment for looms, the combination with guideways on the lay, a block having a vertical reciprocating movement on said guideways, a connection from said block to a stationary part, to move said block on the movement of the lay, of a needle or needles for the selvage-thread, having a rocking motion and supported on and moving with said block, and means for rocking said needles, said means operated on the movement of said block, and comprising a ratchet-wheel, a cam-wheel, and a cam-lever carried on said block, and a pawl engaging and turning the ratchet-wheel, substantially as shown and de- 

